Dredging apparatus.



No.-697,2|5. Patented Apr. 8, I902.

P. E. NOLAN &. Mi MURTENSUN. DBEDGING APPARATUS.

(Application filed July 24, 1900.

(No Model.)

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UNTTnn STATES ATENT OFFICE.

PATRICK E. NOLAN AND MORT'EN MORTENSON, OF SUPERIOR, WISCONSIN, ASSIGNORS OF THREE-FIETI-IS TO DAVID E. ROBERTS, TAYLOR H. WOL- FORD, AND WILLIAM H. LOOKE, OF SUPERIOR, VVISOONSIN.

DREDGING APPARATUS.

SPECIFICATION forming part of Letters Patent NO. 697,215, dated April 8, 1902.

Application filed July 24, 1900. Serial No. 24,661. (No model-l To all whom it may concern: against the dirt deposited on. the screen. Beitknown that WQ,PATRICK E. NOLAN and After the dirt has been sufficiently dissolved MORTEN MORTENSON, citizens of the United to pass through the screen it drops to the bot- States of America, residing at Superior, in tom of the tank, where it mingles with the 5 the county of Douglas and State of lVisconwater furnished by the intake-pipe I and is sin, have invented certain new and useful drawn out by the suction-pipe J, which may Improvements in Dredging Apparatus, of be lengthened or shortened, so as to convey which the following is a specification. its load to any desirable point.

This invention relates to dredging appara- Changes in the form, proportion, and minor IO tus, and more particularly to that class in details of construction may be resorted to which the material is broken up by passing without departing from the principle or sacthrough a sieve and then being mixed with rificing any of the advantages of the invenwater and pumped to any desired point tion. through pipes. It will thus be seen that we provide a con- 15 The object of this invention is to provide a veyer which may be used with any form of dredging apparatus adapted to receive the dredging-machine, one that is exceedingly dirt, &c., from any form of dredging-machine cheap and simple in its construction and will and after pulverizing the earthy material to efficiently perform all of its intended funcmix it with water in order that it may be tions. 2o pumped through pipes to any desired point. Having thus described the various features lVith these object in View and such others of our invention, what we claim as new and as may hereinafter appear our invention conuseful, and desire to secure by Letters Patsists in the particular construction of the vaent, is-

rious parts and in the novel manner of com- 1. In adredging apparatus, atankhaving a 25 bination and arrangement of said parts, all hemispherical screen mounted upon rollers of which will be fully described, and specifictherein, a jet-pipe mounted in the wall of the ally-pointed outin the appended claims, which tank above the said screen, an intake-pipe are intended to accord in their terms, spirit, mounted in the wall of the tank below the and meaning with the prior state of the art said screen, a suction-pipe, and mechanism 7 5 0 and the existing law. for revolving the screen, substantially as In the drawings forming a part of this specishown and described.

fication, Figure 1 is a side elevation. Fig. 2 is 2. In adredging apparatus, a tankhaving a a vertical sectional view. Fig. 3 is a top plan jet-pipe and intake and suction pipes mounted view. Fig. at is a detail view of the rollers. in its wall, a revolving hemispherical screen 35 Referring by letters to the drawings, A repmounted upon rollers within the tank interresentsatank or basin having mounted theremediate the jet-pipe and the intake and sucin approximately near its bottom upon rollers tion pipes, and mechanism for revolving the B a steel hoop or band C, to which is secured screen, substantially as set forth.

a heavy iron hemispherical screen D. This In testimony whereof we hereto set our 4o hoop or band is provided with cog-teeth E, hands in the presence of two witnesses.

adapted to mesh with the pinion F, mounted on the shaft G, which projects through the wall of the tank and is adapted to be driven J by any suitable power. Projecting through Witnesses: 45 the wall of the tank above the screen D is a D. E. ROBERTS,

jet-pipe H, which throws the water with force T. H. WVOLFORD. 

